Attachment for grinding-machines.



No. 825,803. PATENTED JULY 10, 1906..

G. E. BUCK.

ATTACHMENT FOR GRINDING MACHINES.

APPLICATION FILED APR 18. 1905.

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W/T/VESSES: I INVENTOR I d orgaji. Baa/u In: "an M; Prrnu cm. vusmnumu. n c.

PATENT OFFICE.

GEORGE E. BUCK. OF NEWVBURG, IOWVA.

ATTACHMENT FOR GRINDING-MACHINES.

Specification of Letters Patent.

Application filed April 18,1905. Serial No. 256,181.

Patented July 10, 1906.

To all whom, it may concern:

Be it known that I, GEORGE EDMUND BUCK, a citizen of the United States, and a resident of Newburg, in the county of Jasper and State of Iowa, have invented a new ,or cutters in proper relation with respect to an emerywheel or other grinding device in such a manner that the work will be per fectly done without the attention of any one except for the purpose of removing the disk or cutter when sharpened; also, to provide means for varying the degree of pressure between the cutter and the grinding-tool, and to provide for accurately holding the cutter in the desired position and adjusting its sup port to and from the grinding device.

Further objects of the invention will ap pear in the course of the subjoined description.

Reference is to be had to the accompanying drawings, forming a part of this specifica tion, in which similar characters of reference indicate corresponding parts in all the figures.

F i 'ure 1 is a front elevation of an emerystand provided with an attachment constructed in accordance with the principle of my invention. Fig. 2 is an end elevation of the same; and Fig. 3 is a view of a detail, partly in section.

An emery-stand is provided, as usual, with a shaft 11, having rinders 12 and 13 upon its opposite ends. t is also provided with a bracket 14, having a passage for the reception of a projection 15 on a square shaft 16. For providing for holding the projection in the bracket the former is supplied with a hub 17, adapted to be secured to the projection, and this hub is provided with a projection 18. Through this projection passes a screw 19, bearing against a face of the bracket 14. It will be readily understood that by turning the screw 19 the angular position of the projection 18, and consequently of the square shaft 16, can be varied. The projection 15 is preferably rounded, so that it can readily turn in the bracket.

Upon the shaft 16 is mounted a block 21, having a square hole 22 for the passage of the shaft. This block is also provided with a vertical passage through which a rod 23 extends. This rod is provided With a workholding element 24, which in Fig. 3 is represented as in the form of a cone, while in Fi 1 it is replaced by a pyramid 25. The rod 1s provided with a screw 26 and a projection 27, the former for carrying a work-holding element 28. In the third figure this element is represented as a cone located in a reverse position to the cone 24; but in Fi s. 1 and 2 it is replaced by a cone 29, having a fiat or cupped base adapted to come down over the pyramid 2 5 and designed for holding disks. The base of this cone will set flat upon the top of the disk, and it can also come down over the pyramid 25. This provides for securely holding the disk in the position for cutting. The screw 26 is preferably provided with a thumb-piece 30, which can be turned so as to adjust the cone 28 up and down on the screw 26.

The bottom of the rod 23 is provided with a spherical end 31, constituting a portion of a ball-and-socket joint, the remainder of the joint being located in a lever 32. This lever is suspended by links 33 from the outer end 3 1 of the block 21 and is provided with an adjustable weight 35, which, in an obvious manner, can be moved back and forth so as to vary the pressure of the cutter on the grinding-wheel.

For adjustin the block 21 on the shaft 16 I provide the 'ormer with a projection 36, having a screw 37 extending therefrom. A

gages the screw and provides for a fine adjustment. Both the blocks 21 and 39 can be roughly adjusted to position and thelatter secured by a set-screw 40.

It will be understood that the form of the invention illustrated in the drawings merely represents one embodiment thereof and that it can be constructed in other ways within the scope of the claims. The principle of the bur 38, mounted on a movable block 39, en-

invention can also be applied to other operatiorlls than sharpening disks and cuttingtoo s.

Having thus described my invention, I claim as new and desire to secure by Letters Patent 1. An attachment for a grinding-machine, comprising a longitudinally-movable rod, a work-holder mounted on the rod, and an adjustable counterweight connected with the rod for regulating the pressure.

' 2. An attachment for a grinding-machine,

comprising a movable rod, a work-holder mounted on the rod, a lever suspended from above and having a socket in which the end of the rod is mounted, and a weight movable along the lever.

3. An attachment for a grindingrmachine, comprising a square shaft, a block having a square opening for the passage of the shaft, a rod vertically and slidably mounted in said block, a work-holder on the rod, a lever pivotally suspended from the block, the rod resting upon the lever and connected therewith by a ball-and-socket joint, and a weight adjustably mounted upon the lever.

4. An attachment for a grinding-machine, comprising a movable shaft, a block movably mounted thereon, a rod slidably and movably mounted upon the block, a work-holder on the rod, and means for varying the pressure on the rod.

5. An attachment for a grinding-machine, comprising a bracket, a square shaft having a projection passing through said bracket, a hub rigidly mounted on said projection and adapted to engage the upper surface of the bracket, an adjustable work-holder mounted on the square shaft, and means for adjusting the angle of the square shaft with respect to the bracket.

6. An attachment for a grinding-machine, comprising a movable shaft, a block movably -mounted thereon, a rod slidably and movably mounted upon the block, a work-holder on the rod, means for varying the pressure on the rod, and means for adjusting the block along the shaft.

7. An attachment for grinding-machines comprising a clamping-bracket adapted to be secured to a grinding-standard, a movable shaft upon said bracket, a disk-holding device carried by said shaft, a screw for adjusting the movable shaft, said disk-holding device comprising a pyramid adapted to en gage the under concave side of the disk, and a hollow cone connected with the pyramid and projecting beyond it at its edges, the base of said cone adapted to engage the convex side of the disk above said pyramid.

8. An attachment for grindingmachines' comprising a clamping-bracket adapted to be secured to a grinding-standard, a movable shaft upon said bracket, a disk-holding de vice carried by said shaft, means for adjusting the movable arm, and means for normally and yieldingly holding the work against a grinding-stone.

9. An attachment for grinding-machines, comprising a stand, a shaft mounted on the stand, a work-holder on the shaft, and means for adjusting the holder angularly in a horizontal plane upon said stand; said means comprising a hub connected with the shaft, and a screw connected with the hub and with the stand.

10. An attachment for grinding-machines, comprising a stand, a shaft pivotally mounted thereon, a work-holder mounted on the shaft, and arm connected with the shaft and projecting therefrom, and a screw engaging said arm, said screw being connected with the stand, whereby it is adapted to adjust the angular position of the shaft.

11. An attachment for grinding-machines, comprising a shaft, a movable block on the shaft, a work-holder mounted on the block,

and a screw for adjusting the block.

12. An attachment for grinding-machines, comprising a shaft or support, a block movably mounted thereon, a work-holder mounted on the block, a second block mounted on said shaft and having a screw-threaded opening, and a screw engaging said opening and connected with the first block, whereby the first block can be adjusted with respect to the second block.

13. In a disk-grinding machine the combination with a standard and a revoluble grinding element, of a clamping-bracket upon said standard, a shaft on said bracket, a diskholder carried upon the shaft, means for adjusting the shaft angularly in a horizontal plane on the bracket, and means for normally and yieldingly holding the work against, said grinding element.

14. In a disk-grinding machine the combi* nation with a standard and a revoluble grinde ing element, of a clamping-bracket upon said standard, a shaft on said bracket, a diskholder carried upon the shaft, means for adjusting the shaft angularly in a horizontal plane on the bracket, and means for normally and yieldinglyholding the work against said grinding element, said shaft being adjustable toward or from the grinding element and capable of swinging away from the grinding element beyond the range of adjustability.

15. In a disk-grinding machine the combination with a standard and a revoluble grinding element, of a bracket upon the standard, a shaft upon said bracket, a disk-holder carried by the shaft, and means for adjusting the shaft angularly in a horizontal plane, said shaft being capable of swinging away from I the grinding element beyond the range of its adjustability.

means for adjusting the shaft angularly in a to horizontal plane upon the bracket.

In testimony whereof I have signed my 16. In a disk-grinding machine the conibiname to this specification in the presence of nation With a standard and a revoluble grinding element, of a bracket upon said standard, a shaft upon the bracket, a dislvholder carried by said shaft, said disk-holder cornprising' a longitudinally-adjustable rod, and

two subscribing witnesses.

' GEORGE E. BUCK. lVitnesses GEORGE R. CHAMBERS,

JOHN M OARNEY. 

